Journal ArticleDOI
Self-Powered and Self-Functional Cotton Sock Using Piezoelectric and Triboelectric Hybrid Mechanism for Healthcare and Sports Monitoring
TLDR
A self-powered and self-functional sock (S2-sock) to realize diversified functions including energy harvesting and sensing various physiological signals, i.e., gait, contact force, sweat level, etc., by hybrid integrating poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS)-coated fabric triboelectric nanogenerator (TENG) and lead zirconate titanateAbstract:
Wearable devices rely on hybrid mechanisms that possess the advantages of establishing a smarter system for healthcare, sports monitoring, and smart home applications. Socks with sensing capabilities can reveal more direct sensory information on the body for longer duration in daily life. However, the limitation of suitable materials for smart textile makes the development of multifunctional socks a major challenge. In this paper, we have developed a self-powered and self-functional sock (S2-sock) to realize diversified functions including energy harvesting and sensing various physiological signals, i.e., gait, contact force, sweat level, etc., by hybrid integrating poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS)-coated fabric triboelectric nanogenerator (TENG) and lead zirconate titanate (PZT) piezoelectric chips. An output power of 1.71 mW is collected from a PEDOT:PSS-coated sock with mild jumping at 2 Hz and load resistance of 59.7 MΩ. The study shows that cotton socks worn daily can potentially be a power source for enabling self-sustained socks comprising wireless transmission modules and integrated circuits in the future. We also investigate the influences of environmental humidity, temperature, and weight variations and verify that our S2-sock can successfully achieve walking pattern recognition and motion tracking for smart home applications. On the basis of the sensor fusion concept, the outputs from TENG and PZT sensors under exercise activities are effectively merged together for quick detection of the sweat level. By leveraging the hybrid S2-sock, we can achieve more functionality in the applications of foot-based energy harvesting and monitoring the diversified physiological signals for healthcare, smart homes, etc.read more
Citations
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Journal ArticleDOI
Smart Textiles for Electricity Generation.
TL;DR: With worldwide efforts, innovations in chemistry and materials elaborated in this review will push forward the frontiers of smart textiles, which will soon revolutionize the authors' lives in the era of Internet of Things.
Journal ArticleDOI
Haptic-feedback smart glove as a creative human-machine interface (HMI) for virtual/augmented reality applications
Minglu Zhu,Zhongda Sun,Zixuan Zhang,Qiongfeng Shi,Tianyiyi He,Huicong Liu,Tao Chen,Chengkuo Lee +7 more
TL;DR: Through the integrated demonstration of multidimensional manipulation, haptic feedback, and AI-based object recognition, the haptic-feedback glove reveals its potential as a promising solution for low-cost and advanced human-machine interaction, which can benefit diversified areas, including entertainment, home healthcare, sports training, and medical industry.
Journal ArticleDOI
Progress in wearable electronics/photonics—Moving toward the era of artificial intelligence and internet of things
Abstract: Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore Center for Intelligent Sensors and MEMS, National University of Singapore, Singapore, 117608, Singapore Hybrid-Integrated Flexible (Stretchable) Electronic Systems Program, National University of Singapore, Singapore, 117608, Singapore NUS Suzhou Research Institute (NUSRI), Suzhou, 215123, China NUS Graduate School for Integrative Science and Engineering, National University of Singapore, Singapore, 117456, Singapore
Journal ArticleDOI
Machine Learning Glove Using Self-Powered Conductive Superhydrophobic Triboelectric Textile for Gesture Recognition in VR/AR Applications.
Feng Wen,Zhongda Sun,Tianyiyi He,Qiongfeng Shi,Minglu Zhu,Zixuan Zhang,Lianhui Li,Ting Zhang,Chengkuo Lee +8 more
TL;DR: A facile carbon nanotubes/thermoplastic elastomer (CNTs/TPE) coating approach is investigated in detail to achieve superhydrophobicity of the triboelectric textile for performance improvement and realizes a low‐cost and self‐powered interface for gesture recognition.
Journal ArticleDOI
Nanogenerators for smart cities in the era of 5G and Internet of Things
Xun Zhao,Hassan Askari,Jun Chen +2 more
TL;DR: This review will provide a comprehensive review of current research on NGs’ applications in different sectors of a smart city and show how NGs can be a game changer in the development of smart cities under 5G services and how the usage of NG can boost the convenience of city dwellers.
References
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Journal ArticleDOI
Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis
Wei Gao,Wei Gao,Sam Emaminejad,Sam Emaminejad,Sam Emaminejad,Hnin Yin Yin Nyein,Hnin Yin Yin Nyein,Samyuktha Challa,Kevin Chen,Kevin Chen,Austin J Peck,Hossain M. Fahad,Hossain M. Fahad,Hiroki Ota,Hiroki Ota,Hiroshi Shiraki,Hiroshi Shiraki,Daisuke Kiriya,Daisuke Kiriya,Der Hsien Lien,George A. Brooks,Ronald W. Davis,Ali Javey,Ali Javey +23 more
TL;DR: This work bridges the technological gap between signal transduction, conditioning, processing and wireless transmission in wearable biosensors by merging plastic-based sensors that interface with the skin with silicon integrated circuits consolidated on a flexible circuit board for complex signal processing.
Journal ArticleDOI
Stretchable silicon nanoribbon electronics for skin prosthesis
Jaemin Kim,Min-Cheol Lee,Hyung Joon Shim,Roozbeh Ghaffari,Hye Rim Cho,Dong Hee Son,Yei Hwan Jung,Min Soh,Changsoon Choi,Sungmook Jung,Kon Chu,Daejong Jeon,Soon-Tae Lee,Ji Hoon Kim,Seung Hong Choi,Taeghwan Hyeon,Dae-Hyeong Kim +16 more
TL;DR: Smart prosthetic skin instrumented with ultrathin, single crystalline silicon nanoribbon strain, pressure and temperature sensor arrays as well as associated humidity sensors, electroresistive heaters and stretchable multi-electrode arrays for nerve stimulation are demonstrated.
Journal ArticleDOI
High performance piezoelectric devices based on aligned arrays of nanofibers of poly(vinylidenefluoride-co-trifluoroethylene)
Luana Persano,Canan Dagdeviren,Yewang Su,Yewang Su,Yihui Zhang,Yihui Zhang,Salvatore Girardo,Dario Pisignano,Yonggang Huang,John A. Rogers +9 more
TL;DR: This work introduces a large area, flexible piezoelectric material that consists of sheets of electrospun fibres of the polymer poly[(vinylidenefluoride-co-trifluoroethylene] in order to enable ultra-high sensitivity for measuring pressure, even at exceptionally small values (0.1 Pa).
Journal ArticleDOI
Gait analysis using wearable sensors.
TL;DR: The gait analysis methods based on wearable sensors is divided into gait kinematics, gait kinetics, and electromyography, which are expected to play an increasingly important role in clinical applications.
Journal ArticleDOI
Conductive Fiber‐Based Ultrasensitive Textile Pressure Sensor for Wearable Electronics
Jaehong Lee,Hyukho Kwon,Jungmok Seo,Sera Shin,Ja Hoon Koo,Changhyun Pang,Seungbae Son,Jae Hyung Kim,Yong Hoon Jang,Dae Eun Kim,Taeyoon Lee +10 more
TL;DR: A flexible and sensitive textile-based pressure sensor is developed using highly conductive fibers coated with dielectric rubber materials that exhibits superior sensitivity, very fast response time, and high stability when applied to make smart gloves and clothes that can control machines wirelessly as human-machine interfaces.